What is the role of ATP in muscle contraction?
ATP is responsible for cocking (pulling back) the myosin head, ready for another cycle. When it binds to the myosin head, it causes the cross bridge between actin and myosin to detach.
ATP then provides the energy to pull the myosin back, by hydrolysing to ADP + Pi.
TD
Related Biology A Level answers
All answers ▸How do i approach a long answer question in order to gain full marks?
Why is internal temperature regulation an important homeostasis?
How does deforestation lead to reduced soil fertility?
What are the functions of glycoproteins in the cell membrane? (6 marks)